In what can only be called a sleeper hit, Yusei Matsui’s Assassination Classroom manga has become a massive success. The manga’s first volume has now topped 1 million sales, an impressive feat for such a young manga. The series began serialization in Weekly Shonen Jump magazine back in July of 2012.

Assassination Classroom follows an alien hell-bent on world destruction, that decides to give the world a year to try and kill him. In the meantime he decides that he will teach a middle school class how to do just that – assassinate him.

The first volume of Assassination Classroom had an original print of 300,o00 copies, but due to overwhelming demands has undergone several reprints. It looks like we may have found the next big thing in shonen manga. Sound off in the comments section below what you think of Assassination Classroom.